Liquid crystal display device

a liquid crystal display and display state technology, applied in the field of liquid crystal display devices, can solve the problems of poor effect of increasing the fall response speed, inability to effectively enhance the high-band enhancement of input image signals, and poor effect of improving the response characteristics at a fall
US7084846B2Inactive Publication Date: 2006-08-01SHARP KK
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Patent Information

Authority / Receiving Office
US · United States
Current Assignee / Owner
SHARP KK
Publication Date
2006-08-01
Estimated Expiration
Not applicable · inactive patent

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Abstract

A liquid crystal (LC) display device includes a LC panel and a driving circuit. The LC panel exhibits, in its voltage-transmittance characteristics, an extreme transmittance at a voltage equal to or lower than a lowest gray-level voltage. The driving circuit supplies to the LC panel a predetermined driving voltage overshooting a gray-level voltage corresponding to an input image signal of a current vertical period, according to a combination of an input image signal of an immediately preceding vertical period and the input image signal of the current vertical period.
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Description

[0001] This application is a continuation of U.S. patent application Ser. No. 09 / 820,021, filed 28 Mar. 2001, now abandoned entitled LIQUID CRYSTAL DISPLAY DEVICE.BACKGROUND OF THE INVENTION

[0002] 1. Field of the Invention

[0003] The present invention generally relates to a liquid crystal display device (LCD). More particularly, the present invention relates to an LCD preferably used for moving picture display.

[0004] 2. Description of the Background Art

[0005] The LCDs are used for, e.g., personal computers, word processors, amusement equipments, television sets, and the like. Improvement in response characteristics of the LCDs has been studied for high-quality moving picture display.

[0006] Japanese Laid-Open Publication No. 4-288589 discloses an LCD having an increased response speed for intermediate-gray-scale display in order to reduce a residual image. In this LCD, an input image signal having its high-band components pre-enhanced is supplied to a liquid crystal display section so that ...

Claims

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